Height H5, 12-18 cm above the shoe (classic height), with extra reinforcement at the front of the shank for greater protection against the friction of the trekking boot.Asymmetric differentiated with the letters L (Left-left) and the letter R (Right-right).Extra +A fit without tightness in the shank.Made with merino wool, one of the natural materials with a high temperature retention power.Seamless around the perimeter and with the toe closed point to point to avoid rubbing and friction.Greater breathability, adaptability and protection in each step.Designed with Bmax Merino technology, which retains body temperature and transports moisture to the outside, minimizing irritation due to friction and preventing blisters thanks to the high percentage of biodegradable fibers, such as Regenactiv fiber and merino wool.ESP 2 [1-2-3] plantar structure, from less to more density to provide the necessary protection at all times.Ergonomic protection system developed together with SEPOD (Spanish Society of Sports Podiatry) consisting of an additional reinforcement in the areas of greatest impact and wear of the sock such as the toe, heel and midsole.And, supported by the Silver base Layer mesh developed with a high antibacterial pow